Inventor

Katsuhisa Usami

Inventor

Hitachi, JP

Overview

8→

Patents

1978–2001

Patent span

Electricity

Primary field (CPC H)

Patents· 8 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Jprimary

H01JElectric discharge tubes or discharge lamps14%

B82YSpecific uses or applications of nanostructures10%

G11BInformation storage based on relative movement between record carrier and transducer10%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1010%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

Y10TTechnical subjects covered by former us classification10%

C04BLime, magnesia5%

G01NInvestigating or analysing materials by determining their chemical or physical properties5%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%

PatentTitleYear

6,319,622'Magnetic head'2001 6,120,919'Magnetic head'2000 5,898,177'Electron microscope'1999 5,294,811'Thin film semiconductor device having inverted stagger structure, and device having such semiconductor device'1994 4,561,891'Powdery silicon carbide composition for sintering'1985 4,365,264'Semiconductor device with high density low temperature deposited Si.sub.w N.sub.x H.sub.y O.sub.z passivating layer'1982 4,135,088'Charged-particle analyzer'1979 4,126,782'Electrostatic charged-particle analyzer'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2001Patents assigned to HITACHI LTD (8)· patent assignee history

1978–1979Based in Tokyo, JP· patent location history

1982Based in Hinode, JP· patent location history

1985–2001Based in Hitachi, JP· patent location history

1999Patents assigned to HITACHI INSTRUMENTS ENG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	8	1978–2001
HITACHI INSTRUMENTS ENG	1	1999

Locations

Location	Patents	Span
Hitachi, JP	5	1985–2001
Tokyo, JP	2	1978–1979
Hinode, JP	1	1982